EP 0940741 A2 19990908 - Flow controller, parts of flow controller, and related method
Title (en)
Flow controller, parts of flow controller, and related method
Title (de)
Durchflussregler, Durchflussreglerteile und entsprechendes Verfahren
Title (fr)
Régulateurs de débit, parties de régulateurs de débit et procédé apparent
Publication
Application
Priority
- EP 95940785 A 19951120
- US 36586194 A 19941229
Abstract (en)
A mass fluid flow controller has a valve which is controlled by a controller rod structure which is substantially pivotally mounted on a metallic diaphragm which stretches and unstretches with the movement of the rod structure. The actuation of the rod structure is by the expansion and contraction of an actuator wire which is heated for the expansion and allowed to cool for the contraction. The primary fluid flow path through the controller is straight. A sensor conduit, providing a parallel sensor fluid flow path, is connected in position using metallic sealer members which extend in openings to the primary fluid flow path and which are rounded along the direction through such openings. The pressure drop, along the primary fluid flow path, to create flow through the sensor conduit, is provided by a fluid flow restrictor having a core and having lengths of wire along the core which are squeezed between the core and a tapered fluid flow path wall in the vicinity of the sensor conduit input and output connections. A spherical or a conical shape may be used for the form of the core. A valve seat bushing is mounted in pipe structure providing the primary fluid flow path by applying a force against an end surface of the bushing, with movement of the bushing blocked, in order to deform the end surface, push the outer wall of the bushing against the inner wall of the pipe structure, and fix the bushing in the pipe structure. In the relationship between the controller rod structure and a ball which acts as a gate-member for the valve, an elongated stem rod having a sleeve about it may be used in fixing the ball to the controller rod structure. The stem rod may be mounted by fixing it to the elongated sleeve, a distance from the gate-member side of the controller rod structure that is substantially greater than the distance of the position of the ball from the gate-member side of the controller rod structure.
IPC 1-7
IPC 8 full level
B23P 11/00 (2006.01); G01F 1/684 (2006.01); G01F 5/00 (2006.01); G01F 15/00 (2006.01); G05D 7/06 (2006.01)
CPC (source: EP US)
B23P 11/005 (2013.01 - EP US); G01F 1/6842 (2013.01 - EP US); G01F 1/6847 (2013.01 - EP US); G01F 5/00 (2013.01 - EP US); G01F 15/00 (2013.01 - EP US); G01F 15/005 (2013.01 - EP US); G05D 7/0635 (2013.01 - EP US); Y10T 29/49423 (2015.01 - EP US); Y10T 29/49426 (2015.01 - EP US); Y10T 137/0898 (2015.04 - EP US); Y10T 137/7759 (2015.04 - EP US); Y10T 137/7761 (2015.04 - EP US); Y10T 137/87338 (2015.04 - EP US); Y10T 137/87354 (2015.04 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
US 5901741 A 19990511; AU 4242396 A 19960724; CN 100334515 C 20070829; CN 1155864 C 20040630; CN 1175310 A 19980304; CN 1601420 A 20050330; DE 69517447 D1 20000713; DE 69517447 T2 20010111; DE 69526378 D1 20020516; DE 69526378 T2 20021114; DE 69535683 D1 20080221; DE 69535683 T2 20090108; EP 0800672 A2 19971015; EP 0800672 B1 20000607; EP 0940740 A2 19990908; EP 0940740 A3 20000712; EP 0940741 A2 19990908; EP 0940741 A3 20000712; EP 0940741 B1 20080109; EP 0940742 A2 19990908; EP 0940742 A3 20000712; EP 0940742 B1 20020410; ES 2148585 T3 20001016; JP 3717520 B2 20051116; JP H10512071 A 19981117; KR 100323958 B1 20020622; TW 285723 B 19960911; US 5660207 A 19970826; US 5765283 A 19980616; US 5850850 A 19981222; WO 9621182 A2 19960711; WO 9621182 A3 19960906
DOCDB simple family (application)
US 86034397 A 19971002; AU 4242396 A 19951120; CN 200410038447 A 19951120; CN 95197568 A 19951120; DE 69517447 T 19951120; DE 69526378 T 19951120; DE 69535683 T 19951120; EP 95940785 A 19951120; EP 99108927 A 19951120; EP 99108928 A 19951120; EP 99108929 A 19951120; ES 95940785 T 19951120; JP 52098096 A 19951120; KR 19970704536 A 19970630; TW 84112299 A 19951120; US 36586194 A 19941229; US 68526096 A 19960723; US 68532296 A 19960723; US 9515157 W 19951120